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Ceramic Resonator 20MHz
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Price: $1.65
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Item #: COM-00092 -

"Resonators function like crystals but crystals stick closer to their specified frequency over a full temperature range. These resonators are +/-0.5% or better from -20C-+80C. These resonators have built-in load capacitors so no external caps are needed.Datasheets: 20MHz, 10/8/4MHz"

Crystal SMD 16MHz
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Price: $2.61
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Item #: COM-00094 -

"These are very small surface mount quartz crystals used where size is a concern. Ideal for use with the nRF2401 ICs. Features: Small 5x3.2mm footprint Operating temperature: -40-85C Frequency Tolerance: +/- 20ppm 18pF load capacitance Documents: Datasheet " ...

Electrolytic Decoupling Capacitors - 100uF/25V
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Price: $0.61
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Item #: COM-00096 -

"Electrolytic decoupling capacitors 100uF/25V. These capacitors are great transient/surge suppressors. Attach one between the power and ground of your project to ensure smooth power delivery. High quality radial electrolytic capacitors. If you need a bunch of these, you can get good bulk discounts on Digikey, part # : P10269-ND Check out our Unregulated Power Supply Tutorial"

Mini Pushbutton Switch
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Price: $0.61
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Item #: COM-00097 -

"We use these little buttons on everything! These Miniature Single Pole Single Throw switches have a good click to them and are breadboard friendly. Perfect as a tactile reset switch. These buttons are rated up to 50mA. Documents: Dimensional Drawing (NEEDS UPDATE! COMING SOON!) "

Omron Snap Action Switch
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Price: $4.07
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Item #: COM-00098 -

"Whisker Switches - Very sensitive lever switches. Great for detecting objects such as other sumo bots, walls, balls, etc. Simple to wire and attach to external ‘bumper’ bars. Datasheet: Omron Snap Action Switch - D2F.Pdf"

Relay SPDT Sealed
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Price: $4.07
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Item #: COM-00100 -

"These are high quality Single Pole - Double Throw (SPDT) sealed relays. Use them to switch high voltage, and/or high current devices. This relay’s coil is rated up to 12V, with a minimum switching voltage of 5V. The contacts are rated up to 5A (@250VAC, 30VDC). Note: In the Datasheet below there is a pin layout listed as “Bottom View.” Be aware, this pin layout is actually the top-down view NOT bottom-up. Features: 5V DC SPDT Relay Rated up to 5A Fully Sealed Documents:...

SPDT Mini Power Switch
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Price: $2.61
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Item #: COM-00102 -

"Simple SPDT slide switch. Rated at 30V/200mA. The pins have .1" spacing - fits great into a breadboard! Use it as a power switch or general control switch. Documents: Dimensional Drawing "

LED - RGB Clear Common Cathode
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Price: $3.57
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Item #: COM-00105 -

"Ever hear of a thing called RGB? Red, Green, Blue? How about an RGB LED? These 5mm units have four pins - Cathode is the longest pin. One for each color and a common cathode. Use this one LED for three status indicators or pulse width modulate all three and get mixed colors! Note: As of 1/2010, the pins in the datasheet are correctly labeled. Pin 3 is Green and Pin 4 is Blue. Those purchased prior to then will have Blue on Pin 3 and Green on Pin 4. Features: Forward Voltage (RGB): (2.0, 3.2,...

16 Channel Multiplexer
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Price: $1.65
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Item #: COM-00299 -

"Texas Instruments CD74HC4067 16-Channel multiplexer. What can you do with it? How about taking an analog to digital reading from 16 devices with only 1 ADC channel and 4 control pins. That’s right, 16 for the price of 5! 24-Pin SSOP package. Works great with our 28-Pin SSOP to DIP adapters. Documents: Datasheet bildr blog - CD74HC4067 " ...

Thermocouple Amplifier AD595-AQ
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Price: $31.22
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Item #: COM-00306 -

"Analog Devices Thermocouple Type-K Amplifier. Attach a thermocouple, 5V power, and a decoupling capacitor and you’ve got 10mV/C output! Perfect for high temperature application. The 10mV/C analog output interfaces nicely with 10-bit ADCs found on many types of microcontrollers. +/- 3C Accuracy 10mV per degree C Output Laser Trimmed 250mV Output at 25C 5V-15V Power Supply Requires only a decoupling capacitor Resources: AD595 Datasheet Easy Reflow Toaster Oven CNC Toaster Oven " ...

Darlington Driver 8-Channel ULN2803 DIP
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Price: $3.39
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Item #: COM-00312 -

"8 Darlington Arrays in 18-Pin DIP Package part # ULN2803A. Perfect for running relays and high-power devices up to 500mA and up to 50V! Documents: Datasheet Connecting ULN2803 to Arduino Controlling High Power Circuits with Arduino and ULN2803 " ...

H-Bridge Motor Driver 1A
Price: $4.09
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Item #: COM-00315 -

"Faster, cheaper, smaller, better, right? The SN754410 Quad Half H-Bridge is just that. Capable of driving high voltage motors using TTL 5V logic levels, the SN754410 can drive 4.5V up to 36V at 1A continuous output current! Please see datasheet for more information. This is a pin to pin compatible replacement for the L293D. Datasheets: SN754410"

Step Up/Down Inverting Switching Regulator
Price: $3.39
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Item #: COM-00317 -

"DC to DC converter/regulator MC34063A. Has an input range of 3V to 40V, output switch current of up to 1.5 amp. Step up, step down and invert capability. This is the unit we used in the high voltage ringer circuit for the port-o-rotary phone! Documents:MC34063 Datasheet"

Transistor - NPN (2N3904)
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Price: $0.87
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Item #: COM-00521 -

"These are very common, high quality BJT NPN transistors made by ST Micro. Datasheet: 2N3904"

Transistor - PNP (2N3906)
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Price: $0.87
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Item #: COM-00522 -

"These are very common, high quality BJT, PNP transistors made by ST Micro. Datasheet: 2N3906"

Electrolytic Decoupling Capacitors - 10uF/25V
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Price: $0.78
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Item #: COM-00523 -

"Low-profile electrolytic decoupling capacitors 10uF/25V. These capacitors are great transient/surge suppressors and work well as charge pump caps for MAX232 circuits. High quality radial electrolytic capacitors. If you need a bunch of these, you can get good bulk discounts on Digikey, part # : P975-ND Check out our Unregulated Power Supply Tutorial"

I2C EEPROM - 256kbit
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Price: $3.39
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Item #: COM-00525 -

"2 Wire Serial Communication (I2C) EEPROM - The back bone of any microprocessor project. These 8 pin chips need only two wires to communicate and retain their data even with power failure. Use the 256K EEPROM for some serious data storage! Check out the Portuguese Arduino Tutorial and accompanying Windows App, by Daniel Gonçalves. Documents: Datasheet " ...

Voltage Regulator - 3.3V
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Price: $3.39
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Item #: COM-00526 -

"This is the basic LD1117V33 voltage regulator, a low drop positive regulator with a 3.3V fixed output voltage. This fixed regulator provides a great amount of stability and protection for your project and with its on ship trimming this regulator is able to reach an output voltage tolerance within ±1%. Each one of these voltage regulators can output a max current of 800mA. Features: Output Voltage: 3.3V Output Current: 800mA Dropout Voltage: 1V Internal Current and Thermal Limit...

Voltage Regulator - Adjustable
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Price: $3.39
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Item #: COM-00527 -

"This is the LM317TG voltage regulator, a three-terminal positive regulator with a 1.2V to 37V adjustable output voltage. This adjustable regulator provides a local regulation, internal current limiting, thermal shut-down control, and safe area protection for your project. Did we mention that this guy is easy to use? It only requires two external resistors to set the output voltage. Each one of these voltage regulators can output a max current of 1.5A. Features: Output Voltage: 1.2V - 37V...

LED - Super Bright Red
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Price: $1.65
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Item #: COM-00528 -

"These are very bright LEDs. The LEDs are so bright that it hurts to look directly at them. Please take a look at the pictures to get an idea of the intensity. All lenses are clear. Features: 9,000mcd brightness Standard size - T1 ¾ 5mm 2.4V forward drop Max current 20mA Documents: Datasheet LED Tutorial " ...

LED - Super Bright Yellow
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Price: $1.65
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Item #: COM-00530 -

"These are very bright LEDs. The LEDs are so bright that it hurts to look directly at them. Please take a look at the pictures to get an idea of the intensity. All lenses are clear. Features: Standard Size - T1 ¾ 5mm 10,000mcd brightness 2.4V forward drop Max current 20mA Documents: Datasheet LED Tutorial " ...

LED - Super Bright White
Price: $1.65
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Item #: COM-00531 -

"These are very bright LEDs. The LEDs are so bright that it hurts to look directly at them. Please take a look at the pictures to get an idea of the intensity. All lenses are clear. Features: Standard Size - T1 ¾ 5mm Forward Voltage: Min: 3.2V Max: 3.4V Max current 20mA Documents: Datasheet LED Tutorial " ...

LED - Basic Red 3mm
Price: $0.61
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Item #: COM-00533 -

"LEDs - those blinky things. A must have for power indication, pin status, opto-electronic sensors, and fun blinky displays. This is a very standard red LED. The lens is 3mm in diameter, and is diffused. Features: 1.8-2.2VDC forward drop Max current: 20mA Suggested using current: 16-18mA Luminous Intensity: 150-200mcd Documents: Datasheet LED Tutorial " ...

Crystal 10MHz
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Price: $1.65
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Item #: COM-00535 -

"Standard frequency crystals - use these crystals to provide a clock input to your microprocessor. Rated at 20pF capacitance and +/- 50ppm stability. Low profile HC49/US Package."